Ingredients:
1/4 c. butter, softened
1/3 c. sugar
1 egg
1 tsp. vanilla extract
2 1/3 c. all-purpose flour
4 tsp. baking powder
1/2 tsp. salt
1 c. milk
1 1/2 c. fresh or frozen blueberries
STREUSEL:
1/2 c. sugar
1/3 c. all-purpose flour
1/2 tsp. ground cinnamon
1/4 c. cold butter
Directions:
In a large bowl, cream butter and sugar. Beat in egg and vanilla; mix well. Combine the flour, baking powder and salt; add to creamed mixture alternately with milk. Fold in blueberries.
Fill 12 greased or paper-lined muffin cups two-thirds full. In a small bowl, combine the sugar, flour and cinnamon; cut in butter until crumbly. Sprinkle over muffins. Bake at 375 degrees for 25-30 minutes or until browned. Cool for 5 minutes before removing to a wire rack. Serve warm.